US20060250034A1 - Outer rotor type multipolar generator - Google Patents
Outer rotor type multipolar generator Download PDFInfo
- Publication number
- US20060250034A1 US20060250034A1 US10/528,115 US52811505A US2006250034A1 US 20060250034 A1 US20060250034 A1 US 20060250034A1 US 52811505 A US52811505 A US 52811505A US 2006250034 A1 US2006250034 A1 US 2006250034A1
- Authority
- US
- United States
- Prior art keywords
- rotor
- stator
- coaxially
- vanes
- rotor yoke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 230000005405 multipole Effects 0.000 claims abstract description 10
- 230000004323 axial length Effects 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2788—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
- H02K21/222—Flywheel magnetos
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
Definitions
- the present invention relates to an improvement of an outer rotor type multi-pole generator that includes a stator mounted on a stationary support, and a rotor formed by fixedly attaching a magnet to the inner periphery of a bottomed cylindrical rotor yoke that is coaxially fixed to an end of a drive shaft rotatably supported by the support and that coaxially covers the stator, cooling air being made to flow within a stationary casing covering the stator and the rotor.
- cooling air is made to flow within a casing by mounting on a rotor yoke a cooling fan, which is a separate body from the rotor yoke.
- the present invention has been accomplished under the above-mentioned circumstances, and it is an object thereof to provide an outer rotor type multi-pole generator that enables the number of components to be reduced, the efficiency of assembly operations to be improved, the overall axial length of the generator to be reduced to a relatively small value while avoiding any deterioration in the rigidity with which the rotor is supported, and cooling to be carried out efficiently.
- an outer rotor type multi-pole generator that includes a stator mounted on a stationary support, and a rotor formed by fixedly attaching a magnet to the inner periphery of a bottomed cylindrical rotor yoke that is coaxially fixed to an end of a drive shaft rotatably supported by the support and that coaxially covers the stator, cooling air being made to flow within a stationary casing covering the stator and the rotor, characterized in that a plurality of radially extending vanes are integrally provided in a closed end of the rotor yoke, and a plurality of intake holes positioned between the vanes are formed in the closed end of the rotor yoke.
- the plurality of vanes are provided integrally with the closed end of the rotor yoke with the intake holes disposed therebetween, compared with a conventional arrangement in which a cooling fan is installed, it is possible to reduce the number of components and improve the efficiency of assembly operations, it is unnecessary to ensure that there is a space, other than the rotor, exclusively used for generating cooling air, and it is unnecessary to set the length of the drive shaft at a relatively large value; it is therefore possible to avoid a reduction in the rigidity with which the rotor is supported, and it is possible to set the overall axial length of the generator at a small value.
- the weight and balance of the rotor which exhibits a flywheel function, can be optimized by means of the intake holes and, furthermore, cooling air flowing through the stator can be generated reliably by means of the vanes accompanying rotation of the rotor, thus avoiding a reduction in efficiency.
- the outer rotor type multi-pole generator wherein the rotor yoke includes an end wall member and a cylindrical member, the end wall member being die-cast molded so as to integrally have a disk portion having a central part thereof fixed to the end of the drive shaft, a ring portion coaxially surrounding the disk portion, and the plurality of vanes providing a connection between the disk portion and the ring portion, and the cylindrical member being formed in a cylindrical shape coaxially covering the stator and having one end thereof fixed to the ring portion; in accordance with this arrangement, it is possible to form the plurality of vanes more precisely by die-cast molding of the end wall member.
- FIG. 1 to FIG. 5 illustrate one embodiment of the present invention
- FIG. 1 is a vertical sectional view of an outer rotor type multi-pole generator
- FIG. 2 is a perspective view of a rotor
- FIG. 3 is a front view of the rotor
- FIG. 4 is a sectional view along line 4 - 4 in FIG. 3
- FIG. 5 is a sectional view along line 5 - 5 in FIG. 4 .
- this outer rotor type multi-pole generator is used as, for example, an engine generator, and includes a stator 8 mounted on an engine main body 6 via a hollow support 7 , and a rotor 9 covering the stator 8 , the rotor 9 being fixed to an end of a crankshaft 10 , which is a drive shaft, running rotatably through the support 7 and arranged coaxially with the stator 8 .
- the stator 8 includes a stator core 12 formed by laminating a plurality of ring-shaped core plates 11 , and a plurality of projecting poles 13 are projectingly provided with equal intervals therebetween on the outer periphery of the stator core 12 , the projecting poles 13 having a substantially T-shaped form within a plane perpendicular to the axis of the stator core 12 .
- stator core 12 A majority of the stator core 12 is covered with a synthetic resin bobbin 14 , the bobbin 14 being injection molded to cover the stator core 12 so that the extremity of each of the projecting poles 13 and a part of opposite end faces and an inner peripheral face of the stator core 12 are exposed. Moreover, coils 15 are wound around the bobbin 14 at sections corresponding to the projecting poles 13 .
- Through holes 16 are provided in an inner peripheral part of the stator core 12 at a plurality of positions that are spaced in the peripheral direction of the stator core 12 , and by screwing and tightening a bolt 17 inserted into each of the through holes 16 into the support 7 the stator core 12 is coaxially fixed to the support 7 .
- Fixedly supported on the support 7 is a casing 20 covering the stator 8 and the rotor 9 .
- the rotor 9 is formed by fixedly attaching a plurality of magnets 22 to the inner periphery of a bottomed cylindrical rotor yoke 21 coaxially covering the stator 8 , and a central part of a closed end of the rotor yoke 21 is fixed coaxially to the end of the crankshaft 10 .
- the rotor yoke 21 is formed from an end wall member 23 die-cast molded from a light alloy of aluminum, etc., and a cylindrical member 24 made of, for example, mild steel in a cylindrical shape coaxially covering the stator 8 , the cylindrical member 24 being fixed at one end thereof to an outer peripheral part of the end wall member 23 and the plurality of magnets 22 being fixedly attached to the inner periphery of the cylindrical member 24 .
- the end wall member 23 is integrally formed from a disk portion 23 a having a central part thereof fixed to the end of the crankshaft 10 , a ring portion 23 b coaxially surrounding the disk portion 23 a, and a plurality of vanes 23 c providing a connection between the disk portion 23 a and the ring portion 23 b, the vanes 23 c being formed so as to radially connect the disk portion 23 a to the ring portion 23 b.
- Intake holes 25 disposed between the vanes 23 c are formed in the end wall member 23 .
- the disk portion 23 a is provided integrally with a hub 23 d having a part thereof housed in a recess 26 provided in an end of the support 7 , and this hub 23 d is provided with an operating hole 27 opening on the side opposite to the support 7 , a tapered hole 28 increasing in diameter toward the support 7 side, and an annular stepped portion 29 formed between the two holes 27 and 28 so as to face the side opposite to the support 7 .
- Said one end of the crankshaft 10 is coaxially provided with a tapered portion 10 a that is fitted into the tapered hole 27 , and by tightening within the operating hole 27 a bolt 30 screwed into said one end of the crankshaft 10 so that a large-diameter head portion 30 a engages with the stepped portion 29 the disk portion 23 a, that is, the end wall member 23 , is coaxially fixed to the end of the crankshaft 10 .
- the end of the cylindrical member 24 on the side opposite to the support 7 is provided integrally with a collar 24 a extending radially inwardly, and the ring portion 23 b of the end wall member 23 is press-fitted within the cylindrical member 24 so that the collar 24 a abuts against one end face of the ring portion 23 b.
- projections 31 projecting from said one end face of the ring portion 23 b are projectingly provided at a plurality of positions in the peripheral direction of the ring portion 23 b, the projections 31 are inserted into a plurality of engagement holes 32 provided in the collar 24 a, and a portion of each of the projections 31 projecting from the corresponding engagement hole 32 is upset so as to engage with the collar 24 a.
- This upsetting process employs a rolling upsetting method in which pressure is applied in the axial direction to the projecting portion of each of the projections 31 while carrying out precession so as to flatten the projecting portion, and such a rolling upsetting method enables the aluminum die-cast projections 31 to be fixed to the soft steel collar 24 a, without causing cracks.
- regulating projections 33 for determining the peripheral position of a plurality of magnets 22 , the magnets 22 being inserted into the cylindrical member 24 , with the relative positions therebetween being determined by the regulating projections 33 , until they abut against the ring portion 23 b and fixed to the inner periphery of the cylindrical member 24 with an adhesive, etc.
- channels 34 extending in the axial direction are provided in sections, corresponding to the magnets 22 , of the collar 24 a of the cylindrical member 24 and an inner peripheral part of the ring portion 23 b of the end wall member 23 , and by pressing each magnet 22 with a rod-shaped test piece (not illustrated) inserted into the channel 34 it is possible to confirm whether or not the magnet 22 is reliably fixed to the inner periphery of the cylindrical member 24 .
- the weight and balance of the rotor 9 which exhibits a flywheel function, can be optimized by means of the intake holes 25 and, furthermore, cooling air flowing through the stator 8 can be generated reliably by means of the vanes 23 c accompanying rotation of the rotor 9 , thus avoiding a reduction in efficiency.
- the rotor yoke 21 is formed from the end wall member 23 die-cast molded so as to integrally have the disk portion 23 a having the central part thereof fixed to the end of the crankshaft 10 , the ring portion 23 b coaxially surrounding the disk portion 23 a, and the plurality of vanes 23 c providing a connection between the disk portion 23 a and the ring portion 23 b, and the cylindrical member 24 that is formed in a cylindrical shape coaxially covering the stator 8 and has one end thereof fixed to the ring portion 23 b, and it is thus possible to form the plurality of vanes 23 c more precisely by die-cast molding of the end wall member.
Abstract
Description
- The present invention relates to an improvement of an outer rotor type multi-pole generator that includes a stator mounted on a stationary support, and a rotor formed by fixedly attaching a magnet to the inner periphery of a bottomed cylindrical rotor yoke that is coaxially fixed to an end of a drive shaft rotatably supported by the support and that coaxially covers the stator, cooling air being made to flow within a stationary casing covering the stator and the rotor.
- In such an outer rotor type multi-pole generator, as disclosed in, for example, Japanese Patent Application Laid-open No. 9-93849, cooling air is made to flow within a casing by mounting on a rotor yoke a cooling fan, which is a separate body from the rotor yoke.
- However, in the above-mentioned conventional arrangement, in which a cooling fan is mounted on a rotor, not only is the number of components relatively large, but also the efficiency of assembly operations is reduced since the assembly takes a long time and is laborious. Furthermore, the cooling fan might cause a state in which the air within the casing is stirred, and the occurrence of such a state might degrade the efficiency. Moreover, mounting a cooling fan on a rotor inevitably makes the overall axial length of the generator relatively large. In particular, when a cooling fan is mounted on an open end side of the rotor, it is necessary to set the length of the drive shaft at a relatively large value, and since the rotor is cantilever-supported by a support, there is a possibility that the rigidity with which the rotor is supported might be degraded.
- The present invention has been accomplished under the above-mentioned circumstances, and it is an object thereof to provide an outer rotor type multi-pole generator that enables the number of components to be reduced, the efficiency of assembly operations to be improved, the overall axial length of the generator to be reduced to a relatively small value while avoiding any deterioration in the rigidity with which the rotor is supported, and cooling to be carried out efficiently.
- In order to attain this object, in accordance with a first aspect of the present invention, there is provided an outer rotor type multi-pole generator that includes a stator mounted on a stationary support, and a rotor formed by fixedly attaching a magnet to the inner periphery of a bottomed cylindrical rotor yoke that is coaxially fixed to an end of a drive shaft rotatably supported by the support and that coaxially covers the stator, cooling air being made to flow within a stationary casing covering the stator and the rotor, characterized in that a plurality of radially extending vanes are integrally provided in a closed end of the rotor yoke, and a plurality of intake holes positioned between the vanes are formed in the closed end of the rotor yoke. In accordance with the arrangement of the first aspect, since the plurality of vanes are provided integrally with the closed end of the rotor yoke with the intake holes disposed therebetween, compared with a conventional arrangement in which a cooling fan is installed, it is possible to reduce the number of components and improve the efficiency of assembly operations, it is unnecessary to ensure that there is a space, other than the rotor, exclusively used for generating cooling air, and it is unnecessary to set the length of the drive shaft at a relatively large value; it is therefore possible to avoid a reduction in the rigidity with which the rotor is supported, and it is possible to set the overall axial length of the generator at a small value. Moreover, the weight and balance of the rotor, which exhibits a flywheel function, can be optimized by means of the intake holes and, furthermore, cooling air flowing through the stator can be generated reliably by means of the vanes accompanying rotation of the rotor, thus avoiding a reduction in efficiency.
- Furthermore, in accordance with a second aspect of the present invention, in addition to the first aspect, there is provided the outer rotor type multi-pole generator wherein the rotor yoke includes an end wall member and a cylindrical member, the end wall member being die-cast molded so as to integrally have a disk portion having a central part thereof fixed to the end of the drive shaft, a ring portion coaxially surrounding the disk portion, and the plurality of vanes providing a connection between the disk portion and the ring portion, and the cylindrical member being formed in a cylindrical shape coaxially covering the stator and having one end thereof fixed to the ring portion; in accordance with this arrangement, it is possible to form the plurality of vanes more precisely by die-cast molding of the end wall member.
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FIG. 1 toFIG. 5 illustrate one embodiment of the present invention;FIG. 1 is a vertical sectional view of an outer rotor type multi-pole generator,FIG. 2 is a perspective view of a rotor,FIG. 3 is a front view of the rotor,FIG. 4 is a sectional view along line 4-4 inFIG. 3 , andFIG. 5 is a sectional view along line 5-5 inFIG. 4 . - One embodiment of the present invention is explained below with reference to
FIG. 1 toFIG. 5 ; firstly inFIG. 1 , this outer rotor type multi-pole generator is used as, for example, an engine generator, and includes astator 8 mounted on an enginemain body 6 via a hollow support 7, and arotor 9 covering thestator 8, therotor 9 being fixed to an end of acrankshaft 10, which is a drive shaft, running rotatably through the support 7 and arranged coaxially with thestator 8. - The
stator 8 includes astator core 12 formed by laminating a plurality of ring-shaped core plates 11, and a plurality of projectingpoles 13 are projectingly provided with equal intervals therebetween on the outer periphery of thestator core 12, the projectingpoles 13 having a substantially T-shaped form within a plane perpendicular to the axis of thestator core 12. - A majority of the
stator core 12 is covered with asynthetic resin bobbin 14, thebobbin 14 being injection molded to cover thestator core 12 so that the extremity of each of the projectingpoles 13 and a part of opposite end faces and an inner peripheral face of thestator core 12 are exposed. Moreover,coils 15 are wound around thebobbin 14 at sections corresponding to the projectingpoles 13. - Through
holes 16 are provided in an inner peripheral part of thestator core 12 at a plurality of positions that are spaced in the peripheral direction of thestator core 12, and by screwing and tightening abolt 17 inserted into each of the throughholes 16 into the support 7 thestator core 12 is coaxially fixed to the support 7. Fixedly supported on the support 7 is a casing 20 covering thestator 8 and therotor 9. - Referring to
FIG. 2 toFIG. 5 , therotor 9 is formed by fixedly attaching a plurality ofmagnets 22 to the inner periphery of a bottomedcylindrical rotor yoke 21 coaxially covering thestator 8, and a central part of a closed end of therotor yoke 21 is fixed coaxially to the end of thecrankshaft 10. - The
rotor yoke 21 is formed from anend wall member 23 die-cast molded from a light alloy of aluminum, etc., and acylindrical member 24 made of, for example, mild steel in a cylindrical shape coaxially covering thestator 8, thecylindrical member 24 being fixed at one end thereof to an outer peripheral part of theend wall member 23 and the plurality ofmagnets 22 being fixedly attached to the inner periphery of thecylindrical member 24. - The
end wall member 23 is integrally formed from adisk portion 23 a having a central part thereof fixed to the end of thecrankshaft 10, aring portion 23 b coaxially surrounding thedisk portion 23 a, and a plurality ofvanes 23 c providing a connection between thedisk portion 23 a and thering portion 23 b, thevanes 23 c being formed so as to radially connect thedisk portion 23 a to thering portion 23 b.Intake holes 25 disposed between thevanes 23 c are formed in theend wall member 23. - The
disk portion 23 a is provided integrally with ahub 23 d having a part thereof housed in arecess 26 provided in an end of the support 7, and thishub 23 d is provided with anoperating hole 27 opening on the side opposite to the support 7, atapered hole 28 increasing in diameter toward the support 7 side, and an annularstepped portion 29 formed between the twoholes crankshaft 10 is coaxially provided with atapered portion 10a that is fitted into thetapered hole 27, and by tightening within the operating hole 27 abolt 30 screwed into said one end of thecrankshaft 10 so that a large-diameter head portion 30a engages with thestepped portion 29 thedisk portion 23 a, that is, theend wall member 23, is coaxially fixed to the end of thecrankshaft 10. - The end of the
cylindrical member 24 on the side opposite to the support 7 is provided integrally with acollar 24 a extending radially inwardly, and thering portion 23 b of theend wall member 23 is press-fitted within thecylindrical member 24 so that thecollar 24 a abuts against one end face of thering portion 23 b. - Moreover,
projections 31 projecting from said one end face of thering portion 23 b are projectingly provided at a plurality of positions in the peripheral direction of thering portion 23 b, theprojections 31 are inserted into a plurality ofengagement holes 32 provided in thecollar 24 a, and a portion of each of theprojections 31 projecting from thecorresponding engagement hole 32 is upset so as to engage with thecollar 24 a. This upsetting process employs a rolling upsetting method in which pressure is applied in the axial direction to the projecting portion of each of theprojections 31 while carrying out precession so as to flatten the projecting portion, and such a rolling upsetting method enables the aluminum die-cast projections 31 to be fixed to thesoft steel collar 24 a, without causing cracks. - Provided projectingly at equal intervals in the peripheral direction on the other end face of the
ring portion 23 b are regulatingprojections 33 for determining the peripheral position of a plurality ofmagnets 22, themagnets 22 being inserted into thecylindrical member 24, with the relative positions therebetween being determined by the regulatingprojections 33, until they abut against thering portion 23 b and fixed to the inner periphery of thecylindrical member 24 with an adhesive, etc. - Furthermore,
channels 34 extending in the axial direction are provided in sections, corresponding to themagnets 22, of thecollar 24 a of thecylindrical member 24 and an inner peripheral part of thering portion 23 b of theend wall member 23, and by pressing eachmagnet 22 with a rod-shaped test piece (not illustrated) inserted into thechannel 34 it is possible to confirm whether or not themagnet 22 is reliably fixed to the inner periphery of thecylindrical member 24. - The operation of this embodiment is now explained. Since the plurality of
vanes 23 b are provided integrally with the closed end of the bottomedcylindrical rotor yoke 21 with theintake holes 25 disposed therebetween, compared with an arrangement in which a cooling fan is installed, it is possible to reduce the number of components and improve the assembly efficiency. Moreover, since it is unnecessary to ensure that there is a space, other than therotor 9, exclusively used for generating cooling air, it is unnecessary to set the length of thecrankshaft 10 at a relatively large value; it is therefore possible to prevent the rigidity with which therotor 9 is supported from deteriorating, and to set the overall axial length of the generator at a small value. Furthermore, the weight and balance of therotor 9, which exhibits a flywheel function, can be optimized by means of theintake holes 25 and, furthermore, cooling air flowing through thestator 8 can be generated reliably by means of thevanes 23 c accompanying rotation of therotor 9, thus avoiding a reduction in efficiency. - Furthermore, the
rotor yoke 21 is formed from theend wall member 23 die-cast molded so as to integrally have thedisk portion 23 a having the central part thereof fixed to the end of thecrankshaft 10, thering portion 23 b coaxially surrounding thedisk portion 23 a, and the plurality ofvanes 23 c providing a connection between thedisk portion 23 a and thering portion 23 b, and thecylindrical member 24 that is formed in a cylindrical shape coaxially covering thestator 8 and has one end thereof fixed to thering portion 23 b, and it is thus possible to form the plurality ofvanes 23 c more precisely by die-cast molding of the end wall member. - Although an embodiment of the present invention is explained above, the present invention is not limited to the embodiment and can be modified in a variety of ways without departing from the scope and spirit of the present invention described in the claims.
Claims (2)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2002278480A JP2004120848A (en) | 2002-09-25 | 2002-09-25 | Outer rotor type multipolar generator |
JP2002-278480 | 2002-09-25 | ||
PCT/JP2003/012162 WO2004030181A1 (en) | 2002-09-25 | 2003-09-24 | Outer rotor type multipolar generator |
Publications (2)
Publication Number | Publication Date |
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US20060250034A1 true US20060250034A1 (en) | 2006-11-09 |
US7342333B2 US7342333B2 (en) | 2008-03-11 |
Family
ID=32040428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/528,115 Expired - Fee Related US7342333B2 (en) | 2002-09-25 | 2003-09-24 | Outer rotor type multipolar generator |
Country Status (6)
Country | Link |
---|---|
US (1) | US7342333B2 (en) |
EP (1) | EP1553683B1 (en) |
JP (1) | JP2004120848A (en) |
CN (1) | CN1685589B (en) |
AU (1) | AU2003266580A1 (en) |
WO (1) | WO2004030181A1 (en) |
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Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020053838A1 (en) * | 2000-05-30 | 2002-05-09 | Kazuma Okuda | Outer rotor type motor / generator |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2536222B1 (en) * | 1982-11-15 | 1985-10-18 | Villeger Marcel | ANNULAR ALTERNATOR |
CN1029343C (en) * | 1991-11-13 | 1995-07-12 | 精工爱普生株式会社 | Program sample introduction method |
DE19513134A1 (en) * | 1995-04-07 | 1996-10-10 | Aeg Kleinmotoren Gmbh | Electrical machine esp. permanent magnet generator for generating power in series with battery of electrically powered vehicle |
JPH0993849A (en) | 1995-09-20 | 1997-04-04 | Sawafuji Electric Co Ltd | Outer rotor type multipolar generator |
JP2001339925A (en) | 2000-05-30 | 2001-12-07 | Honda Motor Co Ltd | Outer-rotor motor generator |
JP2004120848A (en) * | 2002-09-25 | 2004-04-15 | Sawafuji Electric Co Ltd | Outer rotor type multipolar generator |
-
2002
- 2002-09-25 JP JP2002278480A patent/JP2004120848A/en active Pending
-
2003
- 2003-09-24 AU AU2003266580A patent/AU2003266580A1/en not_active Abandoned
- 2003-09-24 US US10/528,115 patent/US7342333B2/en not_active Expired - Fee Related
- 2003-09-24 CN CN03822865.3A patent/CN1685589B/en not_active Expired - Fee Related
- 2003-09-24 EP EP03798462A patent/EP1553683B1/en not_active Expired - Lifetime
- 2003-09-24 WO PCT/JP2003/012162 patent/WO2004030181A1/en active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020053838A1 (en) * | 2000-05-30 | 2002-05-09 | Kazuma Okuda | Outer rotor type motor / generator |
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US7342333B2 (en) * | 2002-09-25 | 2008-03-11 | Sawafuji Electric Co., Ltd. | Outer rotor type multipolar generator |
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US20090309447A1 (en) * | 2006-12-07 | 2009-12-17 | Ipgate Ag | Polyphase machine comprising a bell-shaped rotor |
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GB2465858B (en) * | 2008-12-03 | 2013-05-15 | Zhongshan Broad Ocean Motor Co | Housing for external rotor motor and rotor produced thereby |
US20130026868A1 (en) * | 2011-07-29 | 2013-01-31 | Itt Manufacturing Enterprises, Inc. | Electric Machine With Enhanced Cooling |
US8760016B2 (en) * | 2011-07-29 | 2014-06-24 | Exelis Inc. | Electric machine with enhanced cooling |
US20130202464A1 (en) * | 2012-02-02 | 2013-08-08 | Jtekt Corporation | Electric oil pump system |
US9175680B2 (en) * | 2012-02-02 | 2015-11-03 | Jtekt Corporation | Electric oil pump system |
US10193411B2 (en) * | 2015-03-12 | 2019-01-29 | Honda Motor Co., Ltd. | Outer rotor motor |
US20160268870A1 (en) * | 2015-03-12 | 2016-09-15 | Honda Motor Co., Ltd. | Outer rotor motor |
US11088605B2 (en) * | 2016-10-12 | 2021-08-10 | Mahle Electric Drives Japan Corporation | Magnet generator with resin-made ceiling |
US20200052556A1 (en) * | 2017-04-19 | 2020-02-13 | Autel Robotics Co., Ltd. | Electric-motor heat dissipation member, electric motor and aircraft |
WO2019220149A1 (en) * | 2018-05-18 | 2019-11-21 | Electronica Products Limited | Electrical machine |
WO2020144492A1 (en) * | 2019-01-07 | 2020-07-16 | Roohian Ghasem | A combined cycle generator with a 100% efficiency |
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US20220320929A1 (en) * | 2021-04-06 | 2022-10-06 | Hamilton Sundstrand Corporation | Aircraft electric motor |
US11811268B2 (en) * | 2021-04-06 | 2023-11-07 | Hamilton Sundstrand Corporation | Aircraft electric motor |
US11851196B2 (en) | 2021-04-06 | 2023-12-26 | Hamilton Sundstrand Corporation | Aircraft electric motor |
EP4181353A1 (en) * | 2021-11-10 | 2023-05-17 | Hamilton Sundstrand Corporation | Composite magnet carrier |
Also Published As
Publication number | Publication date |
---|---|
CN1685589A (en) | 2005-10-19 |
EP1553683A1 (en) | 2005-07-13 |
AU2003266580A1 (en) | 2004-04-19 |
WO2004030181A1 (en) | 2004-04-08 |
JP2004120848A (en) | 2004-04-15 |
EP1553683B1 (en) | 2008-08-27 |
EP1553683A4 (en) | 2006-09-13 |
US7342333B2 (en) | 2008-03-11 |
CN1685589B (en) | 2010-05-12 |
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